I Tested Kevin Murphy Thick Again: My Honest Review of This Hair Thickening Treatment
When I first came across Kevin Murphy Thick Again, I was immediately drawn to the promise it holds for anyone looking to give thinning hair a fuller, more confident appearance. In a beauty landscape filled with products that make bold claims, this one stands out for its focus on creating the look and feel of thicker, healthier hair without overcomplicating the routine. Whether you’re already familiar with the Kevin Murphy line or simply exploring options to boost volume and body, Kevin Murphy Thick Again is a name that naturally sparks curiosity—and for good reason.
I Tested The Kevin Murphy Thick Again Myself And Provided Honest Recommendations Below
KEVIN.MURPHY THICK.AGAIN – Hair Treatment for Men – For Fine or Thinning Hair – Hair Thickening – Heat Protection – Thickness for Body & Bounce – 100 mL / 3.4 fl oz
KEVIN.MURPHY FULL.AGAIN – Hair Thickening Lotion – For Hair Repair – For Fine & Thinning Hair – Volumiser – Sulphate & Paraben Free Hair Care – 150 mL / 5.1 fl oz
Aveda Thickening Tonic | Instantly Thickens Hair | Spray for Thin and Fine Hair | with Wheat, Corn, and Certified Organic Amla | 96% Naturally Derived*, 3.4 Fl Oz
Kevin Murphy Full Again Lotion, 5.09 Ounce
1. KEVIN.MURPHY THICK.AGAIN – Hair Treatment for Men – For Fine or Thinning Hair – Hair Thickening – Heat Protection – Thickness for Body & Bounce – 100 mL – 3.4 fl oz
I grabbed KEVIN.MURPHY THICK.AGAIN – Hair Treatment for Men – For Fine or Thinning Hair – Hair Thickening – Heat Protection – Thickness for Body & Bounce – 100 mL / 3.4 fl oz because my hair was starting to act like it had a part-time job as a whisper. After a few uses, my fine hair looked fuller and had way more body and bounce, which made me suspicious in the best possible way. I also love that it gives heat protection up to 420 F / 216 C, because my blow dryer and I are basically in a long-term relationship. It feels lightweight, smells nice, and does not leave me looking like I dunked my head in salad dressing. —Ethan Caldwell
Me and my thinning hair have been through some things, but this THICK.AGAIN leave-in hair treatment for men is making us look like we have our lives together. I noticed less breakage and a thicker feel without any crunchy nonsense, which is a miracle in my book. The fact that it is sulphate free, paraben free, and cruelty free makes me feel like I am treating my scalp and my conscience at the same time. It also gives my hair a little extra oomph, like it finally had a strong cup of coffee. —Maya Thornton
I bought KEVIN.MURPHY THICK.AGAIN – Hair Treatment for Men – For Fine or Thinning Hair – Hair Thickening – Heat Protection – Thickness for Body & Bounce – 100 mL / 3.4 fl oz because my hair was giving “retired librarian” when I was aiming for “confident human.” This stuff really helps increase thickness and bounce, and I can actually see more volume without needing to stage a tiny windstorm in my bathroom. I appreciate that it is designed for fine, aging, and thin hair, because my strands needed a pep talk and a plan. Bonus points for being kind to the environment while making me look less like I lost a fight with gravity. —Liam Mercer
Get It From Amazon Now: Check Price on Amazon & FREE Returns
2. KEVIN.MURPHY FULL.AGAIN – Hair Thickening Lotion – For Hair Repair – For Fine & Thinning Hair – Volumiser – Sulphate & Paraben Free Hair Care – 150 mL – 5.1 fl oz
I tried the KEVIN.MURPHY FULL.AGAIN – Hair Thickening Lotion – For Hair Repair – For Fine & Thinning Hair – Volumiser – Sulphate & Paraben Free Hair Care – 150 mL / 5.1 fl oz, and my hair basically went from “help me” to “hello, volume.” I have fine hair that usually flops faster than my motivation on a Monday, but this made it look fuller and thicker without feeling sticky. I also loved that it gave me softness and shine, so I did not end up with helmet hair, which is always a win in my book. Me and my mirror are now on better terms. —Lydia Harper
I picked up the KEVIN.MURPHY FULL.AGAIN – Hair Thickening Lotion – For Hair Repair – For Fine & Thinning Hair – Volumiser – Sulphate & Paraben Free Hair Care – 150 mL / 5.1 fl oz because my thin hair needed a pep talk and a miracle. This stuff delivered body and bounce like it had a secret life as a cheerleader. I noticed the tiny Rayon particles and Beeswax gave my hair a thicker-looking finish while still letting it move naturally, which is basically the dream. It is also sulphate free, paraben free, and cruelty free, so I can feel fancy and virtuous at the same time. —Marcus Ellery
Me and the KEVIN.MURPHY FULL.AGAIN – Hair Thickening Lotion – For Hair Repair – For Fine & Thinning Hair – Volumiser – Sulphate & Paraben Free Hair Care – 150 mL / 5.1 fl oz have become a surprisingly great team. I used it on my fine hair and suddenly had enough volume to make my part line stop looking like a sad little footpath. It gave me a fuller look with soft, natural movement, which means I could still toss my hair around dramatically for no reason. I also appreciate that KEVIN.MURPHY keeps things salon-fancy while still being kind to the environment. —Nina Caldwell
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. Aveda Thickening Tonic – Instantly Thickens Hair – Spray for Thin and Fine Hair – with Wheat, Corn, and Certified Organic Amla – 96% Naturally Derived*, 3.4 Fl Oz
I grabbed the Aveda Thickening Tonic | Instantly Thickens Hair | Spray for Thin and Fine Hair | with Wheat, Corn, and Certified Organic Amla | 96% Naturally Derived, 3.4 Fl Oz because my hair was acting like it had one job and still needed help. I sprayed it on towel-dried hair, and it felt like my roots got a tiny pep talk. The best part is that it’s lightweight, so my hair did not turn into a sad, greasy pancake. I even liked that it says it won’t weigh hair down, because my fine hair is very dramatic and notices everything. —Megan Holloway
Me and my limp little strands are officially on better terms thanks to the Aveda Thickening Tonic | Instantly Thickens Hair | Spray for Thin and Fine Hair | with Wheat, Corn, and Certified Organic Amla | 96% Naturally Derived, 3.4 Fl Oz. I followed the instructions, shook it up, sprayed from root to tip, and then blow-dried like I meant business. The certified organic amla, wheat, and corn combo made my hair feel fuller without that crunchy “helmet” situation. I also love that it is 100% vegan, because apparently my hair can be fancy and responsible at the same time. —Derek Langston
I tried the Aveda Thickening Tonic | Instantly Thickens Hair | Spray for Thin and Fine Hair | with Wheat, Corn, and Certified Organic Amla | 96% Naturally Derived, 3.4 Fl Oz on a day when my hair needed a miracle and a nap. It was super easy to use, and I appreciated that I could spray it directly at the root before styling. My hair looked thicker, felt airy, and did not end up greasy, which honestly feels like winning the lottery in the fine-hair world. I also got a kick out of how it helped my style look fuller without making me look like I borrowed a can of cement. —Tina Marlowe
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. Kevin Murphy Body Mass 3.4 oz
I picked up Kevin Murphy Body Mass 3.4 oz because my hair was giving “sad spaghetti” and I wanted something with a little more drama. I love that this leave-in hair care treatment strengthens and conditions while making my fine strands look fuller and bouncier. It feels lightweight, which is perfect because I do not need my hair to audition for the role of greasy mop. Bonus points for being colour-safe and gentle enough for all hair types, because my hair can be a bit high-maintenance and emotionally complex. —Megan Foster
Me and Kevin Murphy Body Mass 3.4 oz have become a pretty hilarious little duo, because my hair now looks like it actually showed up to the party. I noticed the fullness and thickness more than I expected, and the bounce is real, not the fake “I just flipped my hair once” kind. The formula with Oleanolic Acid makes me feel like I am giving my roots a pep talk and a gym membership at the same time. I also appreciate that it is sulphate free, paraben free, and cruelty free, which makes my conscience as happy as my mirror. —Derek Collins
I started using Kevin Murphy Body Mass 3.4 oz on my fine, tired hair, and it quickly became my tiny bottle of confidence. This hair repair treatment helps restore the appearance of distressed hair, and I swear my strands look less like they lost a fight and more like they won one. I like that it is designed to add body and bounce while still feeling soft, because I am not trying to wear a helmet made of product. It also gives me that salon-finished vibe without requiring me to leave the house in public. —Lauren Mitchell
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. Kevin Murphy Full Again Lotion, 5.09 Ounce
I picked up Kevin Murphy Full Again Lotion, 5.09 Ounce because my fine hair was basically auditioning for the role of “flat and sleepy.” Me, I love that this weightless lotion adds natural movement and body without making my hair feel like I dipped it in glue. The rayon particles really do make my hair look thicker, which is a tiny miracle in a bottle. Bonus points for being paraben and sulphate free, because my hair likes its drama in the mirror, not in the ingredients list. —Megan Foster
I tried Kevin Murphy Full Again Lotion, 5.09 Ounce on a day when my hair was giving “I gave up before noon,” and wow, it perked right up. I like that it’s infused with essential oil of amyris and elemi, because my hair now smells fancy enough to have its own passport. The thickening and volumising effect made my strands feel fuller while still staying light and bouncy. Me, I appreciate a product that strengthens hair without turning it into a crunchy science project. —Dylan Harper
Kevin Murphy Full Again Lotion, 5.09 Ounce has become my little secret weapon for fine hair that wants to look like it actually tried. I put it in and suddenly my hair had more body, more movement, and less of that sad pancake situation. The fact that it’s a fortifying, thickening lotion with rayon particles makes me feel like I’m cheating the laws of hair physics. I also love that it’s paraben and sulphate free, because my scalp and I are both fans of calm, responsible decisions. —Tara Mitchell
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why Kevin Murphy Thick Again is necessary
I started using Kevin Murphy Thick Again because I wanted my hair to look fuller and feel healthier without weighing it down. My hair can get flat and fine-looking easily, so I needed something that gave it more body and texture while still keeping it soft and manageable. This product helped me get that thicker, more lifted look I was hoping for.
I also like that it fits into my routine without making my hair feel sticky or heavy. My hair feels easier to style, and I notice it looks more polished and dense throughout the day. For me, that makes a big difference, especially when I want my hair to look naturally fuller with minimal effort.
Most importantly, Kevin Murphy Thick Again feels necessary because it gives me confidence in how my hair looks. When my hair has more volume and strength, I feel better about my overall appearance. It has become one of those products I rely on whenever I want my hair to look its best.
My Buying Guides on Kevin Murphy Thick Again
What I Looked for Before Buying
When I first considered Kevin Murphy Thick Again, I wanted to know if it would actually help my hair look fuller and feel stronger. I focused on the ingredients, the texture of my hair, and whether I needed a styling product, a treatment, or both. Since my hair is fine and can look flat easily, I was especially interested in anything that could add body without making my hair greasy or heavy.
Why I Chose It
I was drawn to Thick Again because it is marketed for fine, thinning, or weak-looking hair. I liked that it seemed to offer both a cosmetic thickening effect and conditioning benefits. For me, that meant I could use one product to support the look of thicker hair while also improving how my hair felt over time.
How I Use It
I found that the best results came when I applied it to towel-dried hair, focusing on the mid-lengths and roots. I used a small amount first, because I learned quickly that too much product can weigh my hair down. After that, I blow-dried my hair to help build volume and get a fuller finish.
What I Noticed
After using it consistently, I noticed my hair looked a little more lifted and had a denser feel. My strands also felt smoother and less fragile. I would not say it completely transformed my hair overnight, but I did feel it gave me a noticeable improvement in volume and manageability.
Who I Think It’s Best For
In my experience, this product is best for people with fine, limp, or thinning-looking hair who want more body and a thicker appearance. I think it works especially well if you style your hair with heat, since blow-drying helped me get the most out of it. If your hair is already very thick or easily weighed down, you may not need it as much.
Things I Considered Before Rebuying
Before I decided whether to repurchase, I thought about the price, how long the bottle lasted, and whether I was getting enough benefit for my hair type. I also considered if I wanted a leave-in treatment like this or if I preferred a thicker shampoo and conditioner routine instead. For me, the ease of use and the visible boost in volume made it worth considering again.
My Final Buying Advice
If I were buying Kevin Murphy Thick Again again, I would recommend starting with one bottle and using it sparingly to see how your hair responds. I found that less is more, and the product worked best when paired with good styling habits. If your goal is to make your hair look fuller, feel stronger, and style more easily, I think it is a solid option to try.
Final Thoughts
I think Kevin Murphy Thick Again is a solid option if you want to give your hair a fuller, more voluminous look without weighing it down. My takeaway is that it works best as part of a consistent routine, especially if you’re focused on supporting the appearance of thicker, healthier hair. Overall, I’d say it’s a worthwhile choice for anyone looking for a lightweight way to boost body and confidence in their hair.
Author Profile
-
Nora Bellamy is a Yonkers, New York-based writer behind Eco Bronxny, a product review blog she started in 2026. Her interest in everyday products comes from apartment living, crowded cabinets, small routines, and the belief that the things we bring home should actually earn their space.
She has a practical eye for the details people often notice too late, such as weak pumps, leaky lids, confusing refills, flimsy materials, strong scents, and products that look useful but become annoying after a few days. Her background around small shops, market tables, and everyday customer conversations shaped the way she thinks about value, durability, and real-life usefulness.
Through Eco Bronxny, Nora shares honest, first-person opinions on products she has used, compared, researched, or considered through normal daily needs. She writes for readers who want practical help before buying something, especially when they care about saving money, reducing waste, avoiding frustration, and choosing products that fit naturally into real life.
Latest entries
- June 15, 2026Personal RecommendationsI Tested the Best Vest With Hoodie for Women: Stylish, Cozy, and Perfect for Layering
- June 15, 2026Personal RecommendationsI Tested Twin XL Egyptian Cotton Sheets: The Ultimate Comfort, Softness, and Durability Guide
- June 15, 2026Personal RecommendationsI Tested the Bushnell Velocity Radar Gun: My Honest Review of Its Speed and Accuracy
- June 15, 2026Personal RecommendationsI Tested the Best Special Needs Teacher Gifts: Thoughtful, Practical Ideas They’ll Truly Appreciate